percent. After leading all of the Army's special operations forces for two years, Brown was selected to become the Deputy Commander of U.S. Special Operations Command. He held the position from 2002 until 2003 when he was nominated to take over U.S. Special Operations Command. Commander of USSOCOM On September 2, 2003, Brown replaced Air Force General Charles R. Holland as the Commander of U.S. Special Operations Command. During Brown's tenure as USSOCOM commander, he was involved in the aftermath of the Pat Tillman friendly fire incident that occurred in early 2004. He testified before the congressional Committee on Oversight and Government Reform in 2007 about receiving a memo from Lt. Gen. Stanley McChrystal, then-commander of JSOC, informing Brown that it was "highly possible that Corporal Tillman was killed by friendly fire". Ultimately, former commanding general of USASOC Lt. Gen. Philip Kensinger and other Army officers were held responsible for the mishandling of information surrounding Tillman's death. On November 23, 2005, Brown, together with U.S. Secretary of Defense Donald Rumsfeld, and Marine Corps Commandant General Michael Hagee announced the creation of the Marine Corps Forces Special Operations Command (MARSOC). Prior to the creation of MARSOC, the Marine Corps had not been involved in special operations, which were conducted by Army, Navy and Air Force units assigned to U.S. Special Operations Command. After the September 11 attacks, the Secretary of Defense had directed the Marine Corps and Brown's predecessor to work closer together in the Global War on Terror. This culminated in the creation of MCSOCOM Detachment One on June 19, 2003, shortly before Brown took command of USSOCOM. It was nearly three years later on February 24, 2006, when MARSOC was activated at Camp Lejeune, North Carolina. In 2006, Brown oversaw the SOF component of the Quadrennial Defense Review (QDR) which is a legislatively-mandated study by the Department of Defense that analyzes strategic objectives and potential military threats. As a result of Brown's contributions to the 2006 QDR were considered a success and a "major stride forward" in preparing U.S. special forces for future contingencies by increasing the SOF budget and manpower. As a result of the 2006 QDR the capabilities of USSOCOM were greatly expanded, including increasing active-duty Special Forces battalions by one-third, expansion of psychological operations and civil affairs units by 33%, increasing the number of Navy SEALs, among other major changes. After four years of leading USSOCOM